Motor driving method and device thereof
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United States of America Patent
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Aug 11, 2009
Grant Date -
Feb 22, 2007
app pub date -
Jul 5, 2006
filing date -
Aug 19, 2005
priority date (Note) -
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Abstract
The invention provides a motor driving device including a converter receiving and converting a non-electrical power source, such as light, heat, mechanical or chemical energy, to a first electrical power, and a selector electrically connected between the converter and a motor, for receiving the first electrical power and a second electrical power from a power source, such as an electrical power generator, and outputting the first or second electrical power according to a rotation speed of the motor.
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